Carrie Ann, 49, got engaged to the former General Hospital star in December 2016 after a couple months of dating, but according toUs Weekly, the pair split about a month ago.
Carrie Ann hinted at a breakup last week when she shared an image of a butterfly and the following quote on both Instagram and Twitter: "Life is a balance of holding on and letting go."
The longtime Dancing with the Stars judge captioned the post with a broken-heart emoji as well as praying hands and a butterfly emoji.
A source told Us that Carrie Ann and Robb, 50, were in the middle of planning their Hawaiian wedding when they decided to call it quits on their relationship and part ways. The nuptials had reportedly been set for July 2018.
Carrie Ann gushed to the magazine about her romance with Robb just last month.
"Robb is such a supportive partner. I'm very grateful and I'm very lucky. When you finally meet the one you're going to spend the rest of your life with it changes your perspective a lot, and suddenly it's no longer about what's right or wrong, it's about being compassionate, and patient, and supportive," Carrie Ann explained.
"What I love is that love stretches you and grows you and that can be uncomfortable, but that's the best part of it. Whatever makes you feel uncomfortable is usually totally worth going through, and once you get to the other side, it's going to be beautiful. And that's one thing that is proven over and over again with Robb, is we grow each other, stretch each other, don't be afraid to be uncomfortable."
Carrie Ann confirmed she was in a relationship in May of last year during an appearance on Live! with Kelly and Michael.
"We met and he took me on my dream date. You know when you're young and you have an idea of, like, what you want to do for your first date? Mine was always to have a late night, on the beach, wine and candles. And so, that's what he did!" Carrie Ann said, adding that her man was "really romantic" and "really grounded."
"I can actually see spending the rest of my life with him, which is something, well, I've never said that. It's a whole different feeling. You look at him, and even though it's not perfect... I go, 'This is a good man. I can see this forever.' So, it's really exciting!"
Carrie Ann dated DWTS pro Artem Chigvintsev, who had also competed on So You Think You Can Dance, from 2006 to 2008.
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Three years later, Carrie Ann got engaged to Jesse Sloan, whom she had met on the online dating website eHarmony. She told Us in 2011 that she and Jesse would marry in the summer of that year, however, she announced in September 2012 they had amicably decided to end their engagement.